ANGGIS, E. V. Penerapan Pembelajaran Biologi Model Problem Based Instruction Scientific untuk Meningkatkan Motivasi Belajar Siswa SMP. Jurnal Mangifera Edu, [S. l.], v. 2, n. 1, p. 1–7, 2017. DOI: 10.31943/mangiferaedu.v2i1.13. Disponível em: https://jurnal.biounwir.ac.id/article/view/13. Acesso em: 20 mar. 2026.